Mention duck houses to the man in the street in the UK and the discussion is likely to refer to the Conservative Party Member of Parliament who, in 2009, claimed the cost of one (£1,645) on his parliamentary expenses form. As I recall, his career as a representative of the people ended when he stood down at the subsequent general election. I don't know how much these duck houses cost but they appear to be well used, unlike the MP's - he said the ducks never took to it. What I find slightly surprising is the purple loosestrife that has managed to grow and bloom on these floating houses. Presumable the copious manure from the mallards and moorhens are all that is required to give the plants the foothold they require.
photo © T. Boughen Camera: Olympus OMD E-M10